:root {
      --neon-cyan: #0ff;
      --neon-amber: #FF9900;
      --matrix-green: #0f0;
      --cyber-background: linear-gradient(45deg, #0a0a1a, #1a1a2e);
      --terminal-border: 2px solid var(--neon-cyan);
      --text-glow: 0 0 10px currentColor;
    }

    body {
      background: var(--cyber-background);
      color: var(--neon-cyan);
      font-family: 'Fira Code', monospace;
      font-size: 14px;
      line-height: 1.6;
      margin: 0;
      text-shadow: var(--text-glow);
      min-height: 100vh;
      padding: 1rem;
      overflow-x: hidden;
    }

    .container {
      max-width: 800px;
      margin: 0 auto;
      border: var(--terminal-border);
      padding: 2rem;
      box-shadow: 0 0 20px var(--neon-amber);
      background: rgba(10,10,26,0.85);
      backdrop-filter: blur(2px);
    }

    .menu {
      border-top: var(--terminal-border);
      border-bottom: var(--terminal-border);
      padding: 1rem 0;
      margin: 2rem 0;
    }

    .menu ul {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      padding: 0;
      list-style: none;
    }

    .menu li {
      list-style: none;
    }

    .menu li::before {
      display: none;
    }

    .menu li a {
      color: var(--neon-amber);
      text-decoration: none;
      transition: all 0.3s ease;
    }

    .menu li a:hover {
      color: black;
      background: var(--neon-amber);
      padding: 0.2rem;
    }

    .prompt {
      color: var(--matrix-green);
      font-weight: bold;
    }

    .blink {
      animation: cyber-blink 1s step-end infinite;
      color: var(--matrix-green);
    }

    @keyframes cyber-blink {
      50% { opacity: 0; }
    }

    pre {
      background: rgba(0,0,0,0.7);
      border: 2px solid var(--neon-amber);
      padding: 0.8rem;
      overflow-x: auto;
      text-shadow: none;
      margin: 1rem 0;
      box-shadow: 0 0 10px var(--neon-amber);
      white-space: pre-wrap;
      word-break: break-word;
      position: relative;
    }

    code {
      background: transparent;
      display: block;
    }

    /* Gradiente apenas no bloco ping */
    .gradient-bar {
      position: relative;
      overflow: hidden;
    }
    .gradient-bar::before {
      content: '';
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(90deg, transparent, var(--neon-amber), var(--neon-cyan), transparent);
      animation: loadingScan 2s linear infinite;
      opacity: 0.182;
      pointer-events: none;
    }
    @keyframes loadingScan {
      0% { left: -100%; }
      100% { left: 100%; }
    }

    /* Ping – compacto, sem quebra de linha */
    .ping-status {
      display: flex;
      align-items: center;
      gap: 0.8rem;
      font-family: 'Fira Code', monospace;
      font-size: 12.2px;
      line-height: 1.6;
      color: var(--neon-cyan);
      margin: 0;
      padding: 0;
      white-space: nowrap;
      flex-wrap: nowrap;
    }
    .ping-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--matrix-green);
      box-shadow: 0 0 6px var(--matrix-green);
      animation: elegantPulse 3.2s ease-in-out infinite;
      flex-shrink: 0;
    }
    @keyframes elegantPulse {
      0% { opacity: 0.2; transform: scale(0.8); box-shadow: 0 0 2px var(--matrix-green); }
      50% { opacity: 1; transform: scale(1.2); box-shadow: 0 0 18px var(--matrix-green); }
      100% { opacity: 0.2; transform: scale(0.8); box-shadow: 0 0 2px var(--matrix-green); }
    }
    .ping-text {
      letter-spacing: 0.5px;
      white-space: nowrap;
    }
    .ping-text a {
      color: var(--neon-amber);
      text-decoration: none;
      border-bottom: 1px dotted var(--neon-amber);
    }
    .ping-text a:hover {
      text-shadow: 0 0 6px var(--neon-amber);
    }
    #pingResult {
      transition: all 0.2s;
      display: inline;
    }

    h2 {
      color: var(--neon-amber);
      border-bottom: 2px solid var(--neon-cyan);
      padding-bottom: 0.5rem;
      margin: 1.5rem 0;
    }

    ul {
      padding-left: 1.5rem;
    }
    li::before {
      content: "⊛";
      color: var(--neon-amber);
      margin-right: 0.5rem;
    }

    a {
      color: var(--neon-cyan);
      text-decoration: none;
    }
    a:hover {
      text-decoration: underline;
      text-shadow: 0 0 15px var(--neon-cyan);
    }

    /* Lista de 3 colunas para coordinates */
    .three-column-list {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 0.2rem 1rem;
      margin-top: 0.5rem;
      margin-bottom: 0;
      padding-left: 0;
      list-style: none;
    }
    .three-column-list li::before {
      content: "•";
      color: var(--neon-amber);
      margin-right: 0.5rem;
    }
    .three-column-list li {
      margin: 0;
      padding: 0;
      white-space: nowrap;
    }